Dual-band asymmetry chiral metamaterial based on planar spiral structure

被引：54

作者：

Ma, Xiaoliang ^{[1
]}

Huang, Cheng ^{[1
]}

Pu, Mingbo ^{[1
]}

Wang, Yanqin ^{[1
]}

Zhao, Zeyu ^{[1
]}

Wang, Changtao ^{[1
]}

Luo, Xiangang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 16期

基金：

国家杰出青年科学基金;

关键词：

CIRCULAR POLARIZER; PHOTONIC METAMATERIAL; OPTICAL-ACTIVITY;

D O I：

10.1063/1.4756901

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A dual-band asymmetric chiral metamaterial is constructed by using two pairs of planar spiral structures with a certain twisted angle. Numerical simulation results show that when a y-polarized wave is incident on the chiral metamaterial the left circularly polarized wave is emitted at 12.25 GHz and 15.57 GHz, while right circularly polarized wave is excited at 13.9 GHz and 16.86 GHz. The measured transmissions are higher than -2.4 dB, and the absolute values of the transmission differences between the right and left circularly polarized waves exceed 15 dB at the four frequencies, which agree well with the simulated results. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4756901]

引用

页数：4

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